Savage World of the Sundered Skies
Type: Melee (Longsword)
Weight: 1 lb
Damage: Str + d8
Special: Ignores non-magical armor, treat as magic weapon, no minimum strength to wield
As an action, Spirit test to will ethereal blade to appear. The number of successes/raises is the number of rounds the blade will stay active.
Mysterious longsword hilt wielded by the wraith of an undead blacksmith. The wielder can will the hilt to conjure an ethereal blade.